Amaurosis (Greek meaning darkening, dark, or obscure) is vision loss or weakness that occurs without an apparent lesion affecting the eye [1]. It may result from either a medical condition or from excess acceleration, as in flight. The term is the same as the Latin gutta serena. Visual loss results in the absence of vision where it existed before, which can happen either acutely (i. ... // A human eye. ... Latin was the language originally spoken in the region around Rome called Latium. ...

Types

Leber's congenital amaurosis is an inherited disease resulting in severe vision loss or blindness that was first described by Theodore Leber in the 19th century. Lebers congenital amaurosis is a rare inherited eye disease that appears at birth or in the first few months of life, typically characterized by nystagmus, sluggish or no pupillary responses, and severe vision loss or blindness. ... Theodor Karl Gustav von Leber (February 29, 1840 - April 17, 1917) was a German ophthalmologist who first described what is now known as Lebers congenital amaurosis in 1869 and Lebers hereditary optic neuropathy in 1871. ...

Amaurosis fugax (Latin: fugax meaning fugitive) is a temporary loss of vision in one eye caused by decreased blood flow (ischemia) to the retina. Another cause is the presence of emboli located in the ipsilateral(same side) internal carotid artery. It is a type of transient ischaemic attack (TIA). Those experiencing Amaurosis usually experience complete symptom abeyance within a few minutes. In a small minority of those who experience Amaurosis, stroke or vision loss has resulted. Diabetes, hypertension and smoking are factors known to increase the risks of suffering this condition. It also can be the result of surgical repair to the mitral valve, when very small emboli may break away from the site of the repair., while the patient's tissue grows to cover the plastic Annuloplasty band. Amaurosis fugax is a type of transient ischaemic attack (TIA). ... Blood flow is the flow of blood in the cardiovascular system. ... In medicine, ischemia (Greek ισχαιμία, isch- is restriction, hema or haema is blood) is a restriction in blood supply, generally due to factors in the blood vessels, with resultant damage or dysfunction of tissue. ... Human eye cross-sectional view. ... Transient ischemic attacks (TIA) are caused by temporary disturbance of blood supply to a restricted area of brain and cause recurrent and brief (less than 24 hours) neurologic dysfunctions. ...

This condition can also occur in ruminants suffering from a vitamin B1 (Thiamin) deficiency due to Thiamine-Related Cerebrocortical Necrosis (CCN).

Management

Those experiencing amaurosis are usually advised to consult a physician immediately as any form of vision loss, even if temporary, is a symptom that may indicate the presence of a serious ocular or systemic problem. The Doctor by Luke Fildes This article is about the term physician, one type of doctor; for other uses of the word doctor see Doctor. ... The term symptom (from the Greek meaning chance, mishap or casualty, itself derived from συμπιπτω meaning to fall upon or to happen to) has two similar meanings in the context of physical and mental health: Strictly, a symptom is a sensation or change in health function experienced by a patient. ...